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authoraamir <[email protected]>2018-07-21 19:30:40 -0700
committeraamir <[email protected]>2018-07-21 19:30:40 -0700
commitfcf40649feb6046fb9b1ed984fb9b19422cd5463 (patch)
tree92b28621af353598ad3a49df70ebb596d1205609 /cutlass-example/cutlass/coord.h
parentb3ad8abea43b7d1e8887f57d6e30c5a40cf752a6 (diff)
adding the cutlass examples
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+/***************************************************************************************************
+ * Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ * * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ **************************************************************************************************/
+/*! \file
+ \brief A Coord is a coordinate of arbitrary rank into a tensor or matrix
+*/
+
+#pragma once
+
+#include <cutlass/cutlass.h>
+
+namespace cutlass {
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/// Describes identity elements
+struct Identity {
+ /// Enumeration describing identity elements. Value assignments are significant.
+ /// Feel free to add or multiply by these, respectively.
+ enum Kind { Additive = 0, Multiplicative = 1 };
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/// Statically-sized array specifying Coords within a tensor
+template <int N_>
+struct Coord {
+ //
+ // Type and constant definitions
+ //
+
+ static int const N = N_;
+
+ //
+ // Data members
+ //
+
+ /// Indices
+ int idx[N];
+
+ //
+ // Methods
+ //
+
+ /// Default ctor initializes uniformly
+ CUTLASS_HOST_DEVICE
+ Coord(int value = 0) {
+ for (int i = 0; i < N; ++i) {
+ idx[i] = value;
+ }
+ }
+
+ /// Constructs from an array of integers
+ CUTLASS_HOST_DEVICE
+ Coord(int _idx[]) {
+ for (int i = 0; i < N; ++i) {
+ idx[i] = _idx[i];
+ }
+ }
+
+ /// Element-wise addition
+ CUTLASS_HOST_DEVICE
+ Coord operator+(Coord const& b) const {
+ Coord c;
+ for (int i = 0; i < N; ++i) {
+ c.idx[i] = idx[i] + b.idx[i];
+ }
+ return c;
+ }
+
+ /// Element-wise subtraction
+ CUTLASS_HOST_DEVICE
+ Coord operator-(Coord const& b) const {
+ Coord c;
+ for (int i = 0; i < N; ++i) {
+ c.idx[i] = idx[i] - b.idx[i];
+ }
+ return c;
+ }
+
+ /// Element-wise multiplication
+ CUTLASS_HOST_DEVICE
+ Coord operator*(Coord const& b) const {
+ Coord c;
+ for (int i = 0; i < N; ++i) {
+ c.idx[i] = idx[i] * b.idx[i];
+ }
+ return c;
+ }
+
+ /// Element-wise division
+ CUTLASS_HOST_DEVICE
+ Coord operator/(Coord const& b) const {
+ Coord c;
+ for (int i = 0; i < N; ++i) {
+ c.idx[i] = idx[i] / b.idx[i];
+ }
+ return c;
+ }
+
+ /// In-place addition
+ CUTLASS_HOST_DEVICE
+ Coord& operator+=(Coord const& b) {
+ for (int i = 0; i < N; ++i) {
+ idx[i] += b.idx[i];
+ }
+ return *this;
+ }
+
+ /// In-place subtraction
+ CUTLASS_HOST_DEVICE
+ Coord& operator-=(Coord const& b) {
+ for (int i = 0; i < N; ++i) {
+ idx[i] -= b.idx[i];
+ }
+ return *this;
+ }
+
+ /// In-place multiplication
+ CUTLASS_HOST_DEVICE
+ Coord& operator*=(Coord const& b) {
+ for (int i = 0; i < N; ++i) {
+ idx[i] *= b.idx[i];
+ }
+ return *this;
+ }
+
+ /// In-place division
+ CUTLASS_HOST_DEVICE
+ Coord& operator/=(Coord const& b) {
+ for (int i = 0; i < N; ++i) {
+ idx[i] /= b.idx[i];
+ }
+ return *this;
+ }
+
+ /// Member access operator
+ CUTLASS_HOST_DEVICE int& operator[](int dim) { return idx[dim]; }
+
+ /// Member access operator
+ CUTLASS_HOST_DEVICE int const& operator[](int dim) const { return idx[dim]; }
+
+ /// Computes the dot product of two Coord instances
+ template <typename T>
+ CUTLASS_HOST_DEVICE T dot(Coord const& b, T sum) const {
+ for (int i = 0; i < N; ++i) {
+ sum += idx[i] * b.idx[i];
+ }
+ return sum;
+ }
+
+ /// Computes the dot product of two Coord instances
+ template <typename T>
+ CUTLASS_HOST_DEVICE T dot(Coord const& b) const {
+ T sum = T(0);
+ for (int i = 0; i < N; ++i) {
+ sum += idx[i] * b.idx[i];
+ }
+ return sum;
+ }
+
+ /// Gets the index of a given Coord element
+ template <int Dim>
+ CUTLASS_HOST_DEVICE int& at() {
+ return idx[Dim];
+ }
+
+ /// Access via index; may limit unrolling potential
+ CUTLASS_HOST_DEVICE
+ int& at(int dim) { return idx[dim]; }
+
+ /// Gets the index of a given Coord element
+ template <int Dim>
+ CUTLASS_HOST_DEVICE int const& at() const {
+ return idx[Dim];
+ }
+
+ /// Access via index; may limit unrolling potential
+ CUTLASS_HOST_DEVICE
+ int const& at(int dim) const { return idx[dim]; }
+
+ /// Determines if two Coord<> objects are equal
+ CUTLASS_HOST_DEVICE
+ bool operator==(Coord<N> const& b) const {
+ bool equal = true;
+ for (int i = 0; equal && i < N; ++i) {
+ equal = (idx[i] == b.idx[i]);
+ }
+ return equal;
+ }
+
+ /// Not equal
+ CUTLASS_HOST_DEVICE
+ bool operator!=(Coord<N> const& b) const { return !(*this == b); }
+
+ /// Clamps a coordinate to a range specified by maximum and minimum values
+ CUTLASS_HOST_DEVICE
+ Coord& clamp(Coord<N> const& max, Coord<N> const& min = Coord<N>()) {
+ for (int i = 0; i < N; ++i) {
+ idx[i] = __NV_STD_MAX(__NV_STD_MIN(idx[i], max.idx[i]), min.idx[i]);
+ }
+ return *this;
+ }
+
+ /// Returns the product of all elements
+ CUTLASS_HOST_DEVICE
+ int count() const {
+ int product = idx[0];
+ for (int i = 1; i < N; ++i) {
+ product *= idx[i];
+ }
+ return product;
+ }
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/// Helper to make a 2-element coordinate
+CUTLASS_HOST_DEVICE
+Coord<1> make_Coord(int _0) {
+ int values[1] = {_0};
+ return Coord<1>(values);
+}
+
+/// Helper to make a 2-element coordinate
+CUTLASS_HOST_DEVICE
+Coord<2> make_Coord(int _0, int _1) {
+ int values[2] = {_0, _1};
+ return Coord<2>(values);
+}
+
+/// Helper to make a 3-element coordinate
+CUTLASS_HOST_DEVICE
+Coord<3> make_Coord(int _0, int _1, int _2) {
+ int values[3] = {_0, _1, _2};
+ return Coord<3>(values);
+}
+
+/// Helper to make a 4-element coordinate
+CUTLASS_HOST_DEVICE
+Coord<4> make_Coord(int _0, int _1, int _2, int _3) {
+ int values[4] = {_0, _1, _2, _3};
+ return Coord<4>(values);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/// Getter
+CUTLASS_HOST_DEVICE
+Coord<2> get_Coord_hw(Coord<3> const& coord) { return make_Coord(coord[1], coord[2]); }
+
+/// Getter
+CUTLASS_HOST_DEVICE
+Coord<2> get_Coord_hw(Coord<4> const& coord) { return make_Coord(coord[1], coord[2]); }
+
+/// Getter
+CUTLASS_HOST_DEVICE
+Coord<3> get_Coord_hwc(Coord<4> const& coord) { return make_Coord(coord[1], coord[2], coord[3]); }
+
+/// Getter
+CUTLASS_HOST_DEVICE
+Coord<3> get_Coord_dhw(Coord<4> const& coord) { return make_Coord(coord[0], coord[1], coord[2]); }
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+} // namespace cutlass